To ensurecompleteness of outbound transactions, alog with periodic validationis thebest control.
Option A (Incorrect):Edit checkshelp withdata accuracy, not completeness.
Option B (Incorrect):Sequential numberingdetects missing transactions but does not verifyactual transmission.
Option C (Incorrect):Recipient ID validationis important foraccuracy, not for ensuring all transactions are sent.
Option D (Correct):Maintaining and validating transaction logsensures thatall outbound transactions are properly accounted for, making it the best completeness control.
[Reference:ISACA CISA Review Manual –Domain 3: Information Systems Acquisition, Development, and Implementation– Coversdata integrity, completeness controls, and transaction logging., , , , , , ]
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